Wal-Mart is gearing up to dominate the grocery business.
The retailer's smaller-format stores, called Neighborhood Markets, are a major threat to traditional supermarkets like Whole Foods, Kroger, and Trader Joe's, and they are expanding rapidly, according to Moody's analysts.
"The advantages of the Neighborhood Market concept will be difficult to beat back," Moody's Vice President Charles O'Shea said in a recent note to clients.
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